Class Notes (835,376)
Canada (509,147)
Psychology (492)
PSYC 1200 (230)
Lecture 18

PSYC 1200 Lecture 18: Lecture 18
Premium

2 Pages
49 Views
Unlock Document

Department
Psychology
Course
PSYC 1200
Professor
Dawson Clary
Semester
Winter

Description
Cognitive and emotional processes that unfold in higher brain centres can block pain signals coming from peripheral receptors Gate-control theory = incoming pain sensations must pass through a gate in the spinal cord that can be closed – block ascending pain signals (not anatomic gate, patterns of neural activity – NO SUPPORT) Endorphins = natural, morphine-like painkillers, play important role in pain modulation Placebo effects and acupuncture depend on endorphins Descending neural path, mediates suppression of pain, originates in midbrain (periaqueductal grey = PAG) Neural activity in path initiated by endorphins acting on PAG neurons Triggers impulses sent down neural circuits that release serotonin Circuits = synapse in spinal cord, release more endorphins Inhibits activity of neurons normally transmitting oncoming pain impulses to brain 2 types of glial cells in spinal cord: astrocytes and microglia (play role in chronic pain)
More Less

Related notes for PSYC 1200

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit